package net.minecraft.network.play.server;

import java.io.IOException;
import net.minecraft.entity.Entity;
import net.minecraft.network.Packet;
import net.minecraft.network.PacketBuffer;
import net.minecraft.network.play.INetHandlerPlayClient;

public class S12PacketEntityVelocity implements Packet<INetHandlerPlayClient> {
	private int entityID;
	public int motionX;
	public int motionY;
	public int motionZ;

	public S12PacketEntityVelocity() {
	}

	public S12PacketEntityVelocity(Entity entityIn) {
		this(entityIn.getEntityId(), entityIn.motionX, entityIn.motionY, entityIn.motionZ);
	}

	public S12PacketEntityVelocity(int entityIDIn, double motionXIn, double motionYIn, double motionZIn) {
		this.entityID = entityIDIn;
		double d0 = 3.9D;

		if (motionXIn < -d0) {
			motionXIn = -d0;
		}

		if (motionYIn < -d0) {
			motionYIn = -d0;
		}

		if (motionZIn < -d0) {
			motionZIn = -d0;
		}

		if (motionXIn > d0) {
			motionXIn = d0;
		}

		if (motionYIn > d0) {
			motionYIn = d0;
		}

		if (motionZIn > d0) {
			motionZIn = d0;
		}

		this.motionX = (int) (motionXIn * 8000.0D);
		this.motionY = (int) (motionYIn * 8000.0D);
		this.motionZ = (int) (motionZIn * 8000.0D);
	}

	/**
	 * Reads the raw packet data from the data stream.
	 */
	public void readPacketData(PacketBuffer buf) throws IOException {
		this.entityID = buf.readVarIntFromBuffer();
		this.motionX = buf.readShort();
		this.motionY = buf.readShort();
		this.motionZ = buf.readShort();
	}

	/**
	 * Writes the raw packet data to the data stream.
	 */
	public void writePacketData(PacketBuffer buf) throws IOException {
		buf.writeVarIntToBuffer(this.entityID);
		buf.writeShort(this.motionX);
		buf.writeShort(this.motionY);
		buf.writeShort(this.motionZ);
	}

	/**
	 * Passes this Packet on to the NetHandler for processing.
	 */
	public void processPacket(INetHandlerPlayClient handler) {
		handler.handleEntityVelocity(this);
	}

	public int getEntityID() {
		return this.entityID;
	}

	public int getMotionX() {
		return this.motionX;
	}

	public int getMotionY() {
		return this.motionY;
	}

	public int getMotionZ() {
		return this.motionZ;
	}
}
